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qmp-event: add event notification for memory hot unplug error 

When memory hot unplug fails, this patch adds support to send
QMP event to notify mgmt about this failure.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
master
Zhu Guihua 2015-04-27 16:47:22 +08:00 committed by Michael S. Tsirkin
parent c06b2ffb02
commit bc09e06113
4 changed files with 41 additions and 1 deletions
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17
docs/qmp/qmp-events.txt
View File

@ -226,6 +226,23 @@ Example:
{ "event": "GUEST_PANICKED",
"data": { "action": "pause" } }
MEM_HOT_UNPLUG_ERROR
--------------------
Emitted when memory hot unplug error occurs.
Data:
- "device": device name (json-string)
- "msg": Informative message (e.g., reason for the error) (json-string)
Example:
{ "event": "MEM_HOT_UNPLUG_ERROR"
"data": { "device": "dimm1",
"msg": "acpi: device unplug for unsupported device"
},
"timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
NIC_RX_FILTER_CHANGED
---------------------

10
hw/acpi/memory_hotplug.c
View File

@ -94,6 +94,7 @@ static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
ACPIOSTInfo *info;
DeviceState *dev = NULL;
HotplugHandler *hotplug_ctrl = NULL;
Error *local_err = NULL;
if (!mem_st->dev_count) {
return;
@ -148,7 +149,14 @@ static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data,
dev = DEVICE(mdev->dimm);
hotplug_ctrl = qdev_get_hotplug_handler(dev);
/* call pc-dimm unplug cb */
hotplug_handler_unplug(hotplug_ctrl, dev, NULL);
hotplug_handler_unplug(hotplug_ctrl, dev, &local_err);
if (local_err) {
trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector);
qapi_event_send_mem_unplug_error(dev->id,
error_get_pretty(local_err),
&error_abort);
break;
}
trace_mhp_acpi_pc_dimm_deleted(mem_st->selector);
}
break;

14
qapi/event.json
View File

@ -330,3 +330,17 @@
##
{ 'event': 'VSERPORT_CHANGE',
'data': { 'id': 'str', 'open': 'bool' } }
##
# @MEM_UNPLUG_ERROR
#
# Emitted when memory hot unplug error occurs.
#
# @device: device name
#
# @msg: Informative message
#
# Since: 2.4
##
{ 'event': 'MEM_UNPLUG_ERROR',
'data': { 'device': 'str', 'msg': 'str' } }

1
trace-events
View File

@ -1575,6 +1575,7 @@ mhp_acpi_write_ost_status(uint32_t slot, uint32_t st) "slot[0x%"PRIx32"] OST STA
mhp_acpi_clear_insert_evt(uint32_t slot) "slot[0x%"PRIx32"] clear insert event"
mhp_acpi_clear_remove_evt(uint32_t slot) "slot[0x%"PRIx32"] clear remove event"
mhp_acpi_pc_dimm_deleted(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm deleted"
mhp_acpi_pc_dimm_delete_failed(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm delete failed"
# hw/i386/pc.c
mhp_pc_dimm_assigned_slot(int slot) "0x%d"